// ========== sidebar ========== //
.sidebar {
  position: fixed;
  display: flex;
  flex-direction: column;
  left: 0;
  top: 0;
  z-index: 0;
  height: 100%;
  width: 400px;
  transition: all 0.3s ease-in 0s;
  overflow-x: hidden;
  background-color: #222;
}

.sidebar-hide {
  display: none;
}

// ========== sidebar header ========== //
.sidebar-tabs {
  display: flex;
  position: relative;
  padding: 0;
  margin: 0;
  height: 4rem;
  width: 100%;
  z-index: 1001;
  justify-content: space-around;
  align-items: flex-start;
  font-family: $feature-font-family;
  flex-grow: 0;
  color: #eee;
  border-bottom: 2px solid #666;
  &::after {
    content: '';
    position: absolute;
    width: 33.33%;
    height: 2px;
    left: 0;
    top: 100%;
    background-color: $feature-color;
    transform: translate3d(0, 0, 0);
    transition: transform 0.2s ease-out 0s;
  }
}

.sidebar-tab-archives,
.sidebar-tab-tags,
.sidebar-tab-categories {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  width: 33.333%;
  height: 100%;
  cursor: pointer;
  .iconfont-archer {
    pointer-events: none;
    margin: 0 0.5rem 0 0rem;
    font-size: 1.5rem;
  }
}

.tab-name {
  pointer-events: none;
  font-size: 1.5rem;
  margin-left: 0.2rem;
}

.sidebar-tabs-active-0 {
  &::after {
    transform: translate3d(0, 0, 0);
  }
}

.sidebar-tabs-active-1 {
  &::after {
    transform: translate3d(100%, 0, 0);
  }
}

.sidebar-tabs-active-2 {
  &::after {
    transform: translate3d(200%, 0, 0);
  }
}

// ========== sidebar content ========== //
.sidebar-content {
  position: relative;
  display: flex;
  width: 300%;
  height: calc(100% - 4rem);
  top: 0;
  left: 0;
  transition: transform 0.3s ease-out 0s;
  overflow-x: hidden;
  transform: translate3d(0, 0, 0);
}

.sidebar-panel-archives,
.sidebar-panel-tags,
.sidebar-panel-categories {
  overflow-x: hidden;
  overflow-y: auto;
  flex-shrink: 0;
  width: calc(33.33% - 2rem);
  -webkit-overflow-scrolling: touch;
  overflow-scrolling: touch;
}

.sidebar-content-active-0 {
  transform: translate3d(0, 0, 0);
}

.sidebar-content-active-1 {
  transform: translate3d(-33.33%, 0, 0);
}

.sidebar-content-active-2 {
  transform: translate3d(-66.67%, 0, 0);
}
